Doxorubicin (DOX)-associated cardiotoxicity is characterized by long-term manifestations, whose mechanisms remain incompletely understood, and is exacerbated by various risk factors, with age being a prominent contributor. The objective of this study was to assess the enduring cardiac molecular impacts of DOX in old CD-1 male mice, focusing on ubiquitinated proteins. At 19 months of age, DOX group received a cumulative dose of...